USN-2639-1

Praveen Kariyanahalli, Ivan Fratric and Felix Groebert discovered that OpenSSL incorrectly handled memory when buffering DTLS data. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2014-8176)

Joseph Barr-Pixton discovered that OpenSSL incorrectly handled malformed ECParameters structures. A remote attacker could use this issue to cause OpenSSL to hang, resulting in a denial of service. (CVE-2015-1788)

Robert Swiecki and Hanno Böck discovered that OpenSSL incorrectly handled certain ASN1_TIME strings. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2015-1789)

Michal Zalewski discovered that OpenSSL incorrectly handled missing content when parsing ASN.1-encoded PKCS#7 blobs. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2015-1790)

Emilia Käsper discovered that OpenSSL incorrectly handled NewSessionTicket when being used by a multi-threaded client. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2015-1791)

Johannes Bauer discovered that OpenSSL incorrectly handled verifying signedData messages using the CMS code. A remote attacker could use this issue to cause OpenSSL to hang, resulting in a denial of service. (CVE-2015-1792)

As a security improvement, this update also modifies OpenSSL behaviour to reject DH key sizes below 768 bits, preventing a possible downgrade attack.

References

Affected packages

Ubuntu:14.04:LTS / openssl

Package

Name: openssl
Purl: pkg:deb/ubuntu/openssl@1.0.1f-1ubuntu2.15?arch=source&distro=trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.0.1f-1ubuntu2.15

Affected versions

1.*

1.0.1e-3ubuntu1

1.0.1e-4ubuntu1

1.0.1e-4ubuntu2

1.0.1e-4ubuntu3

1.0.1e-4ubuntu4

1.0.1f-1ubuntu1

1.0.1f-1ubuntu2

1.0.1f-1ubuntu2.1

1.0.1f-1ubuntu2.2

1.0.1f-1ubuntu2.3

1.0.1f-1ubuntu2.4

1.0.1f-1ubuntu2.5

1.0.1f-1ubuntu2.7

1.0.1f-1ubuntu2.8

1.0.1f-1ubuntu2.11

1.0.1f-1ubuntu2.12

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "libssl-dev"
        },
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "libssl1.0.0"
        },
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "openssl"
        }
    ]
}